In triangle ABC, if B=14.4 degrees, C=25.8 degrees, and a=315cm, find all missing parts.
a.A=139.8 degrees, b=121 cm, c=212 cm
b.A=140.8degrees, b=121 cm, c=211 cm
c.A=140.8 degrees, b=124 cm, c=212 cm
d.A= 139.8 degrees, b=124 cm, c=211cm
Angle A = 180-14.4-25.8 = 139.8
as per sine rule we know that ; a/sin A = b/sin B
or b = 315* sin 14.4 / sin 139.8 = 121.36
hence correct answer is
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